[buffer] We have to simplify the ring before to avoid very small-scaled
features in the original (convex/concave/convex) being enlarged
in a very large scale and causing issues (IP's within pieces).
This might be reconsidered later. Simplifying with a very small
distance will never be visible in the result,
if it is using round joins. For miter joins they are even more
sensitive to small scale input features, however the result will
look better.

A distance strategy can change behaviour (make larger - set simplify
distance to 0.0 to avoid simplification)

This fixes the parcel issue(s)